ISO 17225-9:2021
Solid biofuels — Fuel specifications and classes — Part 9: Graded hog fuel and wood chips for industrial use
Solid biofuels — Fuel specifications and classes — Part 9: Graded hog fuel and wood chips for industrial use
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 6 июля 2021 г.
- Издание:
- ISO IS 17225 edition 1 version 1
- ICS:
- 27.190
This document determines the fuel quality classes and specifications of graded hog fuel and wood chips for industrial use. It covers only hog fuel and wood chips produced from the following raw materials (see ISO 17225-1, Table 1): — 1.1 Forest, plantation and other virgin wood; — 1.2 By-products and residues from wood processing industry; — 1.3 Used wood; — 1.4 Blends and mixtures. This document covers hog fuel that has pieces of varying size and shape, produced by crushing with blunt tools such as rollers, hammers, or flails, and wood chips which are defined as chipped woody biomass with a sub-rectangular shape and a typical length of 5 mm to 50 mm typically in the form of pieces with a defined particle size produced by mechanical treatment with sharp tools such as knives. See 1.1.2 in ISO 17225-1, Table 1 for by-products and residues from wood processing industry, which can include chemically treated material (e.g. glued, painted, laminated), are not allowed to contain halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values or higher than typical values of the country of origin (see Annex B in ISO 17225-1). NOTE If 1.4 Blends and mixtures includes 1.3.2 Chemically treated used wood, it can be only used in the installations permitted to use 1.3.2.
Abstract
Overview - ISO 17225-9:2021 (Solid biofuels - graded hog fuel & wood chips)
ISO 17225-9:2021 defines fuel specifications and quality classes for graded hog fuel and wood chips intended for industrial heat and power generation. It covers fuels produced from virgin wood, processing residues, used wood and blends (see ISO 17225-1 for raw‑material classification), and sets rules for particle size, property classes, sampling and declaration of quality. The standard is intended to support reliable trading, supplier–buyer communication and equipment compatibility for industrial biofuel use.
Key topics and technical requirements
- Scope and origins: Applies to hog fuel (irregular crushed pieces) and wood chips (sub‑rectangular chips ~5–50 mm) from specified raw materials (forest, processing by‑products, used wood, blends). Chemically treated used wood (1.3.2) is restricted to installations permitted to accept it.
- Property classes (I1–I4): Class I1 represents virgin and chemically untreated by‑products; I2–I4 allow progressively wider material origins including some chemically treated or used wood with corresponding restrictions and declarations.
- Particle size and fractions: Defined particle classes (P16, P31, P45, P63 and PL10–PL30+) with main/coarse/fines fractions determined by sieving (ISO 17827‑1). Fines classes (F02–F30+) set maximum percentages of
Технические детали
- Технический комитет
- ISO/TC 238 - Solid biofuels
- SKU
- ISO 17225-9:2021
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